Towards modernisation of research and technology in herbal industries: proceedings of the seminar on medicinal and aromatic plants: Kuala Lumpur (Malaysia), 24-25 Jul 2001, p. 120-123
Proceedings of the 25th Malaysian Society of Animal production Annual Conference: Natural Products and Nutraceuticals in Animal Production: Melaka (Malaysia), 1-3 August 2003, p. 10-19
Proceedings 2007 Conference on Plantation Commodities: Visionary Agriculture: Malaysian Commodity Crops in 100 Years: Kuala Lumpur (Malaysia), 3-4 Jul 2007, p. 301-308